Home / 404,352,003.40-606,528,005.10-398,305,385.80

Finding the Fourth Proportional to 404,352,003.40, 606,528,005.10 and 398,305,385.80

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Solution

The fourth proportional to 404,352,003.40, 606,528,005.10 and 398,305,385.80 is: 597,458,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,352,003.40 : 606,528,005.10 = 398,305,385.80 : x
  2. Step 2: Convert to fraction form
    404,352,003.40/606,528,005.10 = 398,305,385.80/x
  3. Step 3: Cross multiply
    404,352,003.40x = 606,528,005.10 × 398,305,385.80
  4. Step 4: Simplify right side
    404,352,003.40x = 241,583,371,069,859,872
  5. Step 5: Solve for x
    x = 241,583,371,069,859,872/404,352,003.40
  6. Step 6: Final answer
    x = 597,458,078.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.